This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX280S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI32 Standard Air Cylinder SI32AX280S
The AirTAC SI32 Standard Air Cylinder SI32AX280S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 280mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX280S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke280 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX280S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI32 Standard Air Cylinder SI32AX280S
The AirTAC SI32AX280S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 280mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX280S, matching the interface, force and stroke exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. The -A rod is SUS420J2 stainless steel, and the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32AX280S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX280S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX280S |
| Bore size | Ø32 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI32AX280S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32AX280S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32AX280S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI32 Standard Air Cylinder SI32AX280S Is Used
Small Parts Ejection
Provides reliable 402N push force at 0.5MPa to eject small machined components from fixtures without damaging surfaces.
Package Diverting
Actuates diverting gates on 280mm stroke to route lightweight packages across conveyor belts in sorting facilities.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX280S with the SAI32AX280S
To replace the SI32AX280S, order the SAI32AX280S. Confirm the ISO 15552 mounting interface, 32mm bore, 280mm stroke, G1/8 port (PT/G/NPT thread), and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors, while the -A rod specifies SUS420J2 stainless steel. For sizing, the 40mm bore offers higher force (628N push at 0.5MPa), whereas the 32mm suits lighter loads. At 280mm stroke, use a guide to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX280S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI32 Standard Air Cylinder SI32AX280S FAQ
Yes, the SI32AX280S is discontinued. The direct replacement is the SAI32AX280S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 280mm stroke, force, G1/8 port and mounting interface.
This double-acting cylinder has a 32mm bore, 12mm rod, M10x1.25 thread, 27mm cushion, and operates at 30-800 mm/s. Force ratings are: push 402N and pull 345N at 0.5MPa, push 563N at 0.7MPa, push 724N at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX280S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX280S replacement — usually within 7-8 hours.